@bgColorNav:red;

.container {
  display: flex;
  .nav-left {
    color: #ffffff;
    background-color: #001529;
    min-width: 180px;
    height: calc(100vh);
  }
  .main {
    flex: 1;
    height: calc(100vh);
    .content {
      position: relative;
      padding: 20px;
    }
  }
}